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Aftermarket & Converters

Aftermarket parts, accessories, and vehicle conversions must preserve safety and regulatory compliance of the base vehicle. Programs verify device performance, installation integrity, labeling, and where needed, vehicle-level checks for lighting geometry, EMC, masses/dimensions, and coupling limits.

Converters and upfitters face stage-wise responsibilities: inherited evidence from base approvals plus supplementary tests triggered by modifications (structure, electrical, ADAS sensors, weight distribution). Documentation and markings must reflect the completed configuration for registration and inspection.

IAF helps define safe integration envelopes, plan supplementary tests, and compile authority-ready files that protect both the base approval and the converted configuration.

Understanding Aftermarket & Conversions

Key is to maintain safety, visibility, EMC, and legal limits after modification. Evidence must capture installation instructions, torque specs, wiring, sensor relocation/aiming, and updated masses/dimensions if applicable.

Integration & Installation

Mounting, wiring, sealing, and corrosion protection; protection of OEM harnesses and ECUs.

Vehicle-Level Effects

Lighting geometry, EMC, weight/balance, coupling capacities, and ADAS sensor alignment.

Documentation & Markings

Installation manuals, labels/plates, and localized submissions for registration or inspection.

Stage-Wise Compliance

Inherited evidence, supplementary tests, CoP and change control for retrofit programs.

How IAF Supports Aftermarket & Converters

IAF packages integration envelopes, supplementary test plans, and authority-ready documentation.

Integration Envelopes

Clear limits for geometry, wiring, and loads that preserve base approvals and safety margins.

Supplementary Tests

Lighting installation checks, EMC, structural attachments, and ADAS calibration validations.

Convert & Retrofit with Compliance

Protect base approvals and deliver clean, localized files for inspections with IAF.

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